i5-3570k first time OC question

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animositygamers

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I was stress testing my OC of my i5-3570k from 3.4GHz to 4.2GHz which should be no problem for this chip from what i've seen around and when I was testing in Aida64 I noticed this on my graphs...

http://imgur.com/a/hGENs

The 2nd pic readout is still recording after the test so its numbers are way off but take notice to the CPU Clock minimum as well as the graph plummeting every once and a while. What would cause this?

This being my first OC I didn't even start to mess with stuff myself yet, I just preselected one of the OC presaves the bios had there for the 4.2GHz and started it up to see if it would boot fine.

CPU - i5-3570k
Mobo - Asrock z77 extreme 4
PSU - 750w osc
Ram - 2 x 4gb g.skillz @ 1600MHz (which I locked the speed at 1600MHz instead of auto)

Edit 1: I started aida64 again for a moment to see my voltage under load on my cpu with cpu-z and it jumps around from 1.29v - 1.32v.
 
Solution
Zerk2012
The 1600 current is when it has cut it's self down because their nothing going on since you said it was after the test. (this is working as intended)
You need to not use any presets. Change the multiplier to 44 and the Voltage to 1.24 download and run OCCT and RealTempGT that should be a stable 4.4 overclock. If your not stable the bump the voltage up by 0.02 if you are stable then lower it by 0.02 when you get a stable overclock and your temps are still fine I like to bump the voltage up by 0.02 just to keep it stable. Your Voltage is way high for 4.2
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10tacle

10tacle

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That's nothing to worry about. I get weird graph spikes with OCCT. However, your voltage is jumping around so that means you must have "Auto" selected as the CPU voltage or Vcore setting. What you should try is set that at 1.20 manually and see if it will maintain stability at 4.2GHz on all four cores (42x multiplier, 100 BCLK). If it does not, crank up the Vcore by .05v at a time and keep testing until stability is reached (1.205v, 1.210v, etc.). If it does, go backwards in the same manner.

You can then fine tune the voltage going in between +/- the .05v with .001 changes when you do get stability (1.214, 1.213, etc.) to get the least voltage necessary for stability. The motherboard's onboard Vcore controller always pumps more juice than is necessary. Also FYI you really need to run a stress test for hours, not 30 minutes, to truly get an idea of stability. I've run into crashes after nearly 2 hours of a stress test.

All of this, of course, is dependent on what kind of CPU cooler you have, which you did not mention.

 
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Zerk2012

Zerk2012

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Oct 6, 2014
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The 1600 current is when it has cut it's self down because their nothing going on since you said it was after the test. (this is working as intended)
You need to not use any presets. Change the multiplier to 44 and the Voltage to 1.24 download and run OCCT and RealTempGT that should be a stable 4.4 overclock. If your not stable the bump the voltage up by 0.02 if you are stable then lower it by 0.02 when you get a stable overclock and your temps are still fine I like to bump the voltage up by 0.02 just to keep it stable. Your Voltage is way high for 4.2
 
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animositygamers

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I'll be doing that today. I set aside about 8 hours today to try to get a stable cpu OC and maybe a gpu OC too. Thank you for the info and i'm sure i'll be reading through this a few more times today as a reference.
 
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animositygamers

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Thanks for the info. I'm going to be fine tuning all today to try to get a stable OC manually and then I'll be stress testing for 8 hours over night. Also my cooler is a evo 212 so I cant push this thing to the max because I don't got water cooling for the temp.
 
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10tacle

10tacle

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Okay well with a 212 you should be able to get 4.3GHz-4.4GHz out of it and stay under 80C under load. Are you using HW Monitor to keep an eye on temps and voltages? Regarding voltage on the CPU (Vcore) do you have that on auto or are you manually entering the voltage like in that chart example referenced? Generally, the motherboard's BIOS will use more voltage than necessary for a certain overclock (the auto setting).

Overclocking is a *lot* of trial and error, but I've never had anything go corrupt. Speaking of, if you are updating any software like the latest Windows update or installing software, always return everything back to stock speed.

Hopefully your motherboard's BIOS allows you to custom program boot settings where you can keep one boot setup at stock and another at your overclock setting...keeps from having to manually go back and make changes every time depending on need.

 
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